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jwc

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Posts posted by jwc

  1. The 700s built by me with the best parts at the time.  Has the midrange Autoformer with taps.  Can use 8 or 16 ohm driver.  I ordered matching Auricaps for the Mids and the High Out.
    I built these and I made the labels.  I'm pretty sure 1st pair ever made.  I bought premium parts.


    The ES5800 were made by ALK except special order Auricaps to spec.    Tweeter attenuator. 

     


    Basically Only Auricaps in the chain of the Mids and Highs.
    Lots of money in parts here.  Heavy.  They are great for Cornwalls and Cornscalas.  What was great about these is the ability to handle volume without breaking up.  Also, phenomenal on Rock and Roll and Metal.  The 700Hz works great for this kinda music as you bring the low end heavy guitar down into the woofer.  My taste.


    Can use with custom speakers similar 4 OHM K43, K33, Crites, and some Eminence.


    No good reason for selling other than I need to start selling the eye candy around my shop/cave.


    $1100 shipped insured by me.  I will likely spend $100 to ship.  Only CONUS and Only PP friends and Family or a cleared check.  Or pickup cash $950


    Price firm and not breaking up.  If they don't sell, I have drivers here for an outdoor speaker to crank by the pool.


    jc
     

  2. My hospital is a "non profit" but nets many millions per year.  So how is this non profit?  Well, No Owner and no board member gets to squirrel the money.  The excess revenue has to be spent within the company.  More directors hired and there are raises (within limits).  Also constantly building new structures and setting up new or upgrading service lines.  They don't have to pay taxes either.  Hard to compete with this model.  They are growing like a virus squashing any "private" competing organization.

     

    So this "non profit" is misleading.

     

    Yea, I own a business for profit....proud of it.  My business pays it's fair share of taxes too.

     

     

    • Like 1
  3. 1 hour ago, Marvel said:

    Wow! Nice looking bunch of gear  James. What are you using for your crossover?

     

    Bruce

    Well my kp600 have their own analog active crossover.

     

    For digital duties I have more than one dbx venue 360.  I also have a dbx subharmonic synthesizer as well as an Ashley analog active crossover.  I'm also using a dbx pa2 digital processor in an outside pro setup

  4. Looking for those that have had personal experience with these amps.  Could you rank the ones you've heard such as SIT-3> SIT-2> F8 and so on.  If you have heard only one...fine if you want to say you love or don't love it.  Reviews of the amps is optional if you have the time.

     

    Also curious if you have heard these compared to the PASS Class A lineup or any other Class A.

     

    thanks

    jc

  5. The room looks great by the way.  He has spent some money on the room treatments and on the electronics.


    We listened first to the Jubes w/o the sub first off all analog with a custom non eq passive Crossover.  I was shocked at the curve of the bass bin with no EQ.  It was w/o the humps seen in the typical unmodified response curve.  Yes there was a small peak at 1.5 K and 10K.  We only heard a few tracks with this setup.


    Then switched to the digital he has described above.


    This system has no preamp.  From PC via USB to the hilo then to the amps.  The idea of doing something like this with a DEQX in the past has been discussed here before.  He considered this route before.


    We switched to the digital and I was out the gate surprised with what I heard.  I played mostly my late 70's funk tracks that I've listened to multiple hundreds of times.  No doubt that the two tracks Con funk shun "Miss got the body" and Cameo "Keep it Hot" are the best I've heard when it comes to detail, 3D and freakin' "decay".  I've never heard a system that makes the decay of instruments this noticeable.  These are old recordings too.  I also played tracks that had notable strengths in the 80 Hz area that I love and it reproduced those well.  There are also many tracks I played that will kill my ears if the K402's aren't setup right....and it didn't do that either.  
    This isn't a "warm" system by any means.  I've never heard that PASS Xa25 before....it is possible I'm picking up its benefits with all the detail.  The sound didn't get brittle which I've heard in the past with jubes (I'm not going there so don't ask).


    Bass is clean and snappy.  I give him some credit, most would have the bass unnaturally turned up with this system...... I'm mean how could you not with that 1802 in your face.  The bass was well integrated and just at the right strength in my tracks I played.  I see no reason to stuff the jubes in the corners.


    Quick summary, this system has exceptional detail, balance and decay like I've never heard before.  No warmth.  Some 3D.  No hiss at all with an ear up to the horn.  No pops or clicks.  Can't hear the fan on the crown amp. 


    To my ears, the right channel is a tad bit hotter....but it could be my ears.  In my room the stereo always seems to be hotter on my left...go figure.


    I wouldn't hesitate to recommend this route of setup to anyone else if they didn't like the usual digital setup for some reason.

     

    jc
     

    • Like 3
  6. 23 minutes ago, seti said:

    it wasn't so much quantity of bass but quality of bass

    Folks know I'm a funk head.  However, I'm not married to a subwoofer or try to have stunning results below 30Hz.  The bass I like is snappy from 40 to 80.

     

    Sucha  song that has great snappy bass...a funk song...is "Heartbreaker" by ZAPP.  There is no low end....but has the funk bass that is fast.  This isn't bass guitar bass....although I like that too.

     

    When guests are over and music is playing, it's common for them to be impressed when I turn the subs on and shake everything in the room.  Seriously though, I usually have them off when I'm sunk down in the chair listening on my own.

     

     

    • Like 2
  7. 10 hours ago, dwilawyer said:

     

    I was referring to the "upcoming Cornwall V" there isn't one, and nobody needs to be waiting for one in terms of a purchase decision.

     

    The K45 was selected, and spec-ed for the speakers it is in to provide for the best bass. They are not interchangeable. I want better bass so I will put in a K45 in my CW or Khorn and I will have better bass? Hopefully no one is even remotely considering that, and I'm not clear now on what the post means or is intended. 

     

    I have heard the CW IV, own the II, III, and the Pro CW, it doesn't need anything in my opinion. I would also venture to say anyone with nothing to do who ventured to try putting a K45 in there for grins would be extremely disappointed, the whole thing is engineered together - front tractrix porting, new balancing network (XO), and the other drivers. It would sound like every other home brew box with swapped drivers - a loud, untuned, box spewing noise that the builder/swapper thinks is the new end all. 

     

    From a manufacturing standpoint it is always better if you can use the same woofer in as many products as possible, if it was a good fit it would be in there, it isn't, so my guess is it's not a good fit. One thing I am sure of, 100%, Roy isn't reading any of this and going "man, why didn't I think of that, a K-45."

     

    If you change the woofer "you detune the design." @mark1101 You can ask @jwc about this, he has messed around this probably more than anyone with his DBB. He dunked a CW in water to figure out the exact displacement as I recall. he concluded that the woofer in the CW at the time was the perfect match for the displacement, changing it was walking backwards. Knowing that, he started changing the displacement and came up with the DBB - always searching for the "slap yo mama, in yo face bass" his music requires. 

     

    I'm sure that Mark and JC, who have messed around with this a lot, and know what they are doing would tell a CW owner, whether it be a IV or III (and they have both heard the IV, extensively) would say the last thing on earth you want to do is to put a K-45 in your new Cornwalls and that what is in their currently is the best for that design, loading and displacement.

     

     

    I'm not an audio engineer but a past tinkerer.

     

    I think changing out the woofer to some other model is futile.

     

    Change to another woofer will have its pitfalls and that other woofers may have a different impedance at the crossover point as well as creating a change in the phase.  Other issues as well.  I have seen Roy do his magic with a -12 db crosser between the woofer the horn mid and he would stick an extra inductor or "pole" in order to bring it somewhere between -12 and -18 dB roll off to make the phase right.  Very clever and takes a lot of measurements.  Not something that us novices can do that easily with a passive

    .

    He has to think for minute exactly what you have there.  The Cornwall 4 is one of the highest efficiency based reflex speaker system available.  That 15 inch Woofer has the challenge to reach out to 600-700 Hz while keeping a decent low end.  For that system to be very strong in the 30 to 40 Hz area is tough while being of high fidelity in the higher mid band.

    I am sure you could put that same woofer in the same size cabinet and extend the port and it would do a better job at reaching lower frequencies.  I am sure it would look good on the curve too but I would wager having more energy in the lower frequencies you sacrifice the fidelity of higher frequencies.

     

    I did a bunch of do it yourself reflex port stuff with the Klipsch K 33 when you used to be able to directly order from Klipsch parts.  I have found that in a 6 cubic foot cabinet,.... and tuning down to 35 Hz created a boomy bass and the overall system itself would be degraded.  I found that the system sounded better when ported to 38 Hz or 40 Hz.

     

    Being that I am a Klipsch fan,  you have a great speaker.  Sometimes it might not be what you were looking for.  Certainly the room could have an issue and your electronics, but in my opinion for you to start changing gear and moving to another house is not the answer.  Heck you can change all the capacitors in the crossover ...... and change all the internal wiring to pure silver on the crossover, input speaker leads, and voice coil.  That type of thing is fun to do when it is a complete DIY project.
     

    • Like 1
    • Thanks 1
  8.  

     

    So Mike attached is my three-way setup. I have been tinkering with this for a while with a dbx 360 venue processor. For the mids and the tweet I was using the included passive crossover. Yes behind the screen as you know.

     

    My end result has been satisfactory  it I'm yearning for better.  and I'm going to start over and triamp this system with the dbx crossover again without any included passives.   

     

    Any particular setting you see there that would obviously have to be modified as it is meant to be behind the screen. I've been through several 402 systems and I know that the 1500 Hertz amount of energy is always been hard on my ears. 

     

    Jc

     

     

     

    Screenshot_20210522-083344.png

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